EP0795741A3 - Force measuring device using an electromechanical weighing cell - Google Patents

Force measuring device using an electromechanical weighing cell Download PDF

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Publication number
EP0795741A3
EP0795741A3 EP97103311A EP97103311A EP0795741A3 EP 0795741 A3 EP0795741 A3 EP 0795741A3 EP 97103311 A EP97103311 A EP 97103311A EP 97103311 A EP97103311 A EP 97103311A EP 0795741 A3 EP0795741 A3 EP 0795741A3
Authority
EP
European Patent Office
Prior art keywords
force
load cell
annular
measuring device
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97103311A
Other languages
German (de)
French (fr)
Other versions
EP0795741A2 (en
Inventor
Scherer Ralf
Helmut Dr. Gassmann
Joachim Hose Von Wolfframsdorff
William Alexander Mcrobbie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tedea Huntleigh Europe Ltd
Original Assignee
Tedea Huntleigh Europe Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tedea Huntleigh Europe Ltd filed Critical Tedea Huntleigh Europe Ltd
Publication of EP0795741A2 publication Critical patent/EP0795741A2/en
Publication of EP0795741A3 publication Critical patent/EP0795741A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01L1/2231—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being disc- or ring-shaped, adapted for measuring a force along a single direction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G01G19/12—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles having electrical weight-sensitive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01G3/141—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being disc or ring shaped

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Measurement Of Force In General (AREA)

Abstract

Eine Vorrichtung zur Kraftmessung weist eine elektromechanische Wägezelle (1) auf, die einen ring- oder scheibenförmigen Verformungskörper (2) hat. Ein Kraftaufnahmering (12) stützt sich über einen eine Gleitfläche bildenden ringförmigen Kugelflächenabschnitt (10) schwenkbar an einem Krafteinleitungsring (2) der Wägezelle (1) ab. Der Kugelflächenabschnitt (10) liegt in Höhe des ring- oder scheibenförmigen Verformungskörpers (2) der Wägezelle (1). Auf den Kraftaufnahmering (12) wirkende Seitenkräfte und Winkelbewegungen des Kraftaufnahmerings (12) verursachen kein die Messung der Wägezelle (1) störendes Biegemoment.

Figure 00000001
A device for measuring force has an electromechanical load cell (1) which has an annular or disk-shaped deformation body (2). A force absorption ring (12) is pivotably supported on a force introduction ring (2) of the load cell (1) via an annular spherical surface section (10) forming a sliding surface. The spherical surface section (10) lies at the level of the annular or disk-shaped deformation body (2) of the load cell (1). Lateral forces acting on the force-absorbing ring (12) and angular movements of the force-absorbing ring (12) do not cause a bending moment which disturbs the measurement of the load cell (1).
Figure 00000001
EP97103311A 1996-03-14 1997-02-28 Force measuring device using an electromechanical weighing cell Withdrawn EP0795741A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19609921 1996-03-14
DE1996109921 DE19609921C2 (en) 1996-03-14 1996-03-14 Force measuring device with an electromechanical load cell

Publications (2)

Publication Number Publication Date
EP0795741A2 EP0795741A2 (en) 1997-09-17
EP0795741A3 true EP0795741A3 (en) 1998-09-09

Family

ID=7788194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103311A Withdrawn EP0795741A3 (en) 1996-03-14 1997-02-28 Force measuring device using an electromechanical weighing cell

Country Status (2)

Country Link
EP (1) EP0795741A3 (en)
DE (1) DE19609921C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325390A1 (en) 2003-05-28 2004-12-30 Bizerba Gmbh & Co. Kg Load cell
DE102006024385A1 (en) * 2006-05-24 2006-12-21 Gtm Gassmann Testing And Metrology Gmbh Bending ring force receiver e.g. for force receiver, has rotationally symmetric receiver body with outside force application ring connected with measuring elements and further internal force application ring provided
CN207751564U (en) * 2017-08-07 2018-08-21 永正传感(杭州)有限公司 Ultralow module weighing sensor
EP3821220A4 (en) * 2018-08-22 2022-04-20 University of Utah Research Foundation Force and torque sensor for prosthetic and orthopedic devices
WO2023220369A1 (en) * 2022-05-13 2023-11-16 Sensata Technologies Inc. Segmented interfaces to minimize impact of parasitic forces for strain measurement-based sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566182A1 (en) * 1992-04-08 1993-10-20 Mettler-Toledo B.V. Device for adjustably supporting a weighing element
DE4344565C1 (en) * 1993-12-24 1995-03-23 Schenck Ag Carl Device for measuring loads

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104926A1 (en) * 1991-02-18 1992-08-20 Gassmann Theiss Messtech BENDING RING TENSIONER
DE4139439A1 (en) * 1991-11-29 1993-06-03 Siemens Ag FORCE SENSOR

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566182A1 (en) * 1992-04-08 1993-10-20 Mettler-Toledo B.V. Device for adjustably supporting a weighing element
DE4344565C1 (en) * 1993-12-24 1995-03-23 Schenck Ag Carl Device for measuring loads

Also Published As

Publication number Publication date
EP0795741A2 (en) 1997-09-17
DE19609921A1 (en) 1997-09-18
DE19609921C2 (en) 1998-09-10

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Inventor name: MCROBBIE, WILLIAM ALEXANDER

Inventor name: HOSE VON WOLFFRAMSDORFF, JOACHIM

Inventor name: GASSMANN, HELMUT, DR.

Inventor name: RALF, SCHERER

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